1/10 of 9 is 0.9. 0.99 is 1/10 larger (/100, x110%). So 9 would be in the hundredths position
decimal
3.9
To round a number to the nearest tenth, you look at the digit in the hundredths place. For the number 13.07, the hundredths digit is 7. Since 7 is 5 or greater, you round up the tenths place (0) by 1, resulting in 13.1.
To round 2.21 to the nearest tenth, you look at the hundredths place, which is the second digit after the decimal point. In this case, the number is 2.21, and the digit in the hundredths place is 1. Since 1 is less than 5, you round down, keeping the tenths place the same. Therefore, 2.21 rounded to the nearest tenth is 2.2.
To round 219.109 to the nearest tenth, look at the digit in the hundredths place, which is 0. If this digit is 5 or greater, you round up the tenths place; if it's less than 5, you keep the tenths place the same. In this case, the tenths place is 1 and the hundredths place is 0, so you keep the tenths place as is. Therefore, 219.109 rounded to the nearest tenth is 219.1.
decimal
32.6
3.9
22.4
18.8
40.8
To round a number to the nearest tenth, you look at the digit in the hundredths place. For the number 13.07, the hundredths digit is 7. Since 7 is 5 or greater, you round up the tenths place (0) by 1, resulting in 13.1.
8.1
To round 29.4 to the nearest tenth, we look at the digit in the hundredths place, which is 4. Since 4 is less than 5, we keep the digit in the tenths place the same, resulting in 29.4 rounded to the nearest tenth.
45.3
29.1
To round 2.21 to the nearest tenth, you look at the hundredths place, which is the second digit after the decimal point. In this case, the number is 2.21, and the digit in the hundredths place is 1. Since 1 is less than 5, you round down, keeping the tenths place the same. Therefore, 2.21 rounded to the nearest tenth is 2.2.